基于激光遥感的甲烷泄漏源搜索系统  

A methane leak source detection system based on laser remote sensing

作　　者：贾彦杰 杨旸 彭睿 王川 孙冬远 于立成 田亚莉 邱选兵[3,4] Jia Yanjie;Yang Yang;Peng Rui;Wang Chuan;Sun Dongyuan;Yu Licheng;Tian Yali;Qiu Xuanbing(PipeChina Group Southwest Pipeline Co.,Ltd.,Chengdu 610041,China;Hilong Group(Shanghai)Information Technology Co.,Ltd.,Shanghai 200949,China;School of Applied Science;Shanxi Province Engineering Research Center of Precision Measurement and Online Detection Equipment,Taiyuan University of Science and Technology,Taiyuan 030024,China)

机构地区：[1]国家管网集团西南管道有限责任公司,成都610041 [2]海隆石油集团(上海)信息技术有限公司,上海200949 [3]太原科技大学应用科学学院 [4]山西省精密测量与在线检测装备工程研究中心,太原030024

出　　处：《河南师范大学学报（自然科学版）》2024年第4期57-62,共6页Journal of Henan Normal University(Natural Science Edition)

基　　金：国家自然科学基金(52076145,12304403).

摘　　要：为了弥补传统人工在天然气生产、运输和存储过程甲烷泄漏巡检中存在的劳动强度大、容易漏检、耗时耗力等不足,提出了一种基于激光遥感吸收光谱技术的甲烷泄漏搜索系统.选用近红外1653.7 nm的TO封装DFB激光器作为光源,以收发一体的卡塞格林光学结构进行发射激光和接收来自反射回来的微弱光信号,采用嵌入式单片机实现光信号的调制与解调.以开源ArduPilot AMP2.8作为无人机的飞控,采用433 MHz无线模块进行甲烷泄漏数据实时传送,计算机接收端以LabView虚拟仪器开发了接收应用程序进行数据的接收、显示和存储.以体积分数为10-3的甲烷气袋为搜索目标,采用Z字形搜索算法模拟了现场甲烷泄漏搜索实验.实验结果表明,该算法具有较高的检测精度和定位准确性,能够准确地检测到甲烷泄漏源位置.这为天然气泄漏源的快速检测和定位提供了有效的技术支持.In order to address the limitations of traditional manual methane leak inspections in natural gas production,transportation,and storage processes,such as high labor intensity,susceptibility to missed detections,and time-consuming efforts,a methane leak detection system based on laser remote sensing absorption spectroscopy technology is proposed.A TO-packaged laser at 1653.7 nm in the near-infrared range is chosen as the light source.The system utilizes a Cassegrain optical structure for both laser emission and reception of weak light signals reflected back.Embedded microcontrollers are employed for modulating and demodulating the light signals.The ArduPilot AMP2.8 open-source autopilot is used for unmanned aerial vehicle(UAV)control,with a 433 MHz wireless module for real-time methane leak data transmission.On the computer receiver side,a LabView virtual instrument is developed for data reception,display,and storage.Methane gas bags of different volume fractions are used as search targets,and a Z-shaped search algorithm is employed to simulate on-site methane leak search experiments.Experimental results demonstrate that this algorithm exhibits high detection accuracy and precise localization,accurately pinpointing methane leak source locations,providing effective technical support for the rapid detection and localization of natural gas leak sources.

关 键 词：天然气泄漏 激光遥感 无人机 Z字形搜索 

分 类 号：O433.1[机械工程—光学工程]